Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 6,315	$ 6,833	$ 6,230
Postretirement benefit plans
Net other comprehensive income (loss) recognized during the period, net of tax of $925 million in 2021, $292 million in 2020 and $586 million in 2019	3,404	(1,067)	(2,182)
Amounts reclassified from accumulated other comprehensive loss, net of tax of $130 million in 2021, $119 million in 2020 and $247 million in 2019	477	440	908
Pension settlement charge, net of tax of $355 million in 2021	1,310	0	0
Other, net	(76)	60	41
Other comprehensive income (loss), net of tax	5,115	(567)	(1,233)
Comprehensive income	$ 11,430	$ 6,266	$ 4,997